Cushioning mechanism for use with seat of chair and interlocking cushioning mechanism for seat and backrest
US4744600A · kind A · utility
64Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Apr 28, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/441
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cushioning mechanism suitable for use with an office chair is disclosed. A seat frame is connected pivotally to the front of a support frame for swinging motion about the pivotal connection. The swinging motion of the seat frame is converted into the translation thereof by means of a link mechanism, and thus a cushioning member such as a coil spring incorporated in the support frame is compressed by the translation of the seat frame. Accordingly, even when the seat portion is made to swing by a large degree, the front of the seat portion is not greatly shifted in height, thereby enabling the user to sit in the chair comfortably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.